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Title:
Three unusual supernova remnants
Authors:
Milne, D. K.; Goss, W. M.; Haynes, R. F.; Wellington, K. J.; Caswell, J. L.; Skellern, D. J.
Affiliation:
AA(Commonwealth Scientific and Industrial Research Organization, Div. of Radiophysics, Epping, New South Wales, Australia), AB(Commonwealth Scientific and Industrial Research Organization, Div. of Radiophysics, Epping, New South Wales, Australia), AC(Commonwealth Scientific and Industrial Research Organization, Div. of Radiophysics, Epping, New South Wales, Australia), AD(Commonwealth Scientific and Industrial Research Organization, Div. of Radiophysics, Epping, New South Wales, Australia), AE(Commonwealth Scientific and Industrial Research Organization, Div. of Radiophysics, Epping, New South Wales, Australia), AF(Sydney, University, Sydney, Australia)
Publication:
Royal Astronomical Society, Monthly Notices, vol. 188, Aug. 1979, p. 437-444. (MNRAS Homepage)
Publication Date:
08/1979
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
MILKY WAY GALAXY, RADIO SOURCES (ASTRONOMY), SUPERNOVA REMNANTS, ASTRONOMICAL COORDINATES, ASTRONOMICAL MAPS, BRIGHTNESS TEMPERATURE, STELLAR SPECTRA
Comment:
A&AA ID. AAA026.125.004
Bibliographic Code:
1979MNRAS.188..437M

Abstract

The radio sources G326.3-1.8, G348.5+0.1, and G348.7+0.3 have been observed with a resolution of 0.8 arcmin by using the 1.4-GHz Fleurs synthesis telescope and with 2.2 arcmin resolution at 14.7 GHz with the Parkes 64-m telescope. These observations, in combination with lower-resolution measurements over a wide frequency range, confirm that each source is a supernova remnant in the Galaxy. G348.5+0.1 (CTB 37A) and G348.7+0.3 (CTB 37B) are of similar size and brightness and, in projection, are separated by little more than their own diameter. 'Emerging' from the shell of G348.5+0.1 is a remarkable 'jet' - a feature not previously found among supernova remnants. G326.3-1.8 (MSH 15-56) is also unusual in that it possesses not only a shell typical of most supernova remnants but also a flat-spectrum central core which shows marked similarities to the Crab nebula.

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